body {}

p {
    font: 20px "宋体" text-indent: 2em;
    line-height: 30px;
    letter-spacing: 2px;
}

a:link {
    text-decoration: none;
    color: thistle;
}

a:visited {
    color: rgb(170, 156, 129);
}

p:hover {
    color: rgb(12, 72, 112);
}

body {
    background-color: darkgrey;
    background-image: url(7.jpg);
    background-size: 100%;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: 0 center;
    /*background-position: center -100px;*/
}

h1 {
    background-image: url(7.jpg);
    background: size 65px;
    background-repeat: no-repeat;
    text-align: center;
    background-position: 43% center;
}

h1,
h2,
h3 {
    color: burlywood;
}

a:hover {
    color: rgb(133, 174, 187);
    font-size: 20px;
    background-color: rgb(184, 219, 235);
    letter-spacing: 2px;
}

a:active {
    color: skyblue;
}

table,
th,
td {
    border: 1px solid black;
    border-collapse: collapse;
}

table {
    background-color: honeydew;
    width: 400px;
    height: 20px;
    text-align: center;
}

table th {
    background-color: #e2e2e2;
}